TITLE

Enhanced radiation resistance of nanocrystalline pyrochlore Gd2(Ti0.65Zr0.35)2O7

AUTHOR(S)
Jiaming Zhang; Jie Lian; Fuentes, Antonio F.; Fuxiang Zhang; Maik Lang; Fengyuan Lu; Ewing, Rodney C.
PUB. DATE
June 2009
SOURCE
Applied Physics Letters;6/15/2009, Vol. 94 Issue 24, p243110
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The radiation response of nanostructured materials is of great interest because of the potential of nanoscale materials design for mitigating radiation damage. We report a greatly enhanced resistance to radiation-induced amorphization in nanocrystalline Gd2(Ti0.65Zr0.35)2O7 at a particle size less than 20 nm while larger crystals with the size >100 nm are radiation sensitive. The grain size of pyrochlore, Gd2(Ti0.65Zr0.35)2O7, can be controlled by mechanical milling and subsequent thermal treatment (from 800 to 1500 °C), offering the possibility of designing pyrochlore materials at the nanoscale with enhanced performance for specific radiation environments.
ACCESSION #
42223734

 

Related Articles

  • Effects of heat treatment and magnetoannealing on nanocrystalline Co-ferrite powders. Wang, Y. C.; Ding, J.; Yin, J. H.; Liu, B. H.; Yi, J. B.; Yu, S. // Journal of Applied Physics;12/15/2005, Vol. 98 Issue 12, p124306 

    This work consists of three parts: the effects of heat treatment (slow cooling and quenching), magnetoannealing, and postannealing of samples with induced anisotropy. It has been found that noncomplete inverse spinel structure was the result after annealing at higher temperature and quenching....

  • Magnetic anisotropy of vertically aligned α-Fe2O3 nanowire array. Chang Hyun Kim; Hye Jin Chun; Dae Sung Kim; Shin Young Kim; Park, Jeunghee; Je Yong Moon; Gangho Lee; Jungbum Yoon; Younghun Jo; Myung-Hwa Jung; Seung Il Jung; Cheol Jin Lee // Applied Physics Letters;11/27/2006, Vol. 89 Issue 22, p223103 

    Vertically aligned Fe2O3 nanowire arrays were synthesized by the thermal oxidation of Fe foil. They consist of single-crystalline rhombohedral α-Fe2O3 nanocrystals grown along the [1120] direction. Most of the nanowires have a sharp tip (diameter=50 nm) and beltlike base....

  • Effect of external magnetic field on anisotropy of Co/Cu multilayer nanowires. Ji Ung Cho; Ji Hyun Min; Seung Pil Ko; Joon Young Soh; Young Keun Kim; Jun-Hua Wu; Choi, Sung H. // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08C909 

    We have investigated the effect of external magnetic field exercised during the fabrication of the Co and Co/Cu multilayer nanowires in anodic aluminum oxide (AAO) templates using pulse electrodeposition. It is found that the effect becomes significant when the pore size is small. Deterioration...

  • Detection of anisotropy by transverse susceptibility in (110)-oriented cubic systems. Presa, B.; Matarranz, R.; Calleja, J. F.; Contreras, M. C. // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08Q511 

    The transverse susceptibility has been calculated for a single-domain particle with cubic anisotropy and for an assembly of randomly oriented particles with cubic anisotropy. The special case with the [110] axis perpendicular to the plane determined by the bias field and the alternating field is...

  • Die-upset hybrid Pr–Fe–B nanocomposite magnets. Gabay, A.M.; Zhang, Y.; Hadjipanayis, G.C. // Applied Physics Letters;7/19/2004, Vol. 85 Issue 3, p446 

    Anisotropic nanocomposite R–Fe–B/Fe magnets (R=Pr, Tb) were synthesized by hot pressing and subsequent die upsetting blends of R-rich and R-lean melt-spun ribbons. The magnets have a layered structure, in which alternating layers of the two starting alloys lay perpendicularly to...

  • Anisotropy transition of Co in IrMn/Co/FeOx/Co by field cooling. Chih-Ta Shen; Chih-Huang Lai; Po-Hsiang Huang; Hsu, S. Y.; Ting Yi Chung // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08C910 

    The temperature dependence of Co anisotropy on a nano-FeOx layer was studied in the structure of IrMn/Co (FM1)/FeOx/Co (FM2). An anisotropy transition of the FM2 was observed from a combination of uniaxial and unidirectional anisotropies at room temperature (RT) to unidirectional anisotropy at...

  • Spatial control of magnetic anisotropy for current induced domain wall injection in perpendicularly magnetized CoFeB|MgO nanostructures. Hayashi, Masamitsu; Yamanouchi, Michihiko; Fukami, Shunsuke; Sinha, Jaivardhan; Mitani, Seiji; Ohno, Hideo // Applied Physics Letters;5/7/2012, Vol. 100 Issue 19, p192411 

    Magnetic anisotropy of perpendicularly magnetized CoFeB|MgO films is spatially tailored using depth controlled Ar ion etching with patterned etching masks. Nanowires with patterned etching have significantly reduced coercivity compared to those without the etching. We show that the sign of the...

  • Recent progress with multicompartmental nanoparticles. Rahmani, Sahar; Lahann, Joerg // MRS Bulletin;Mar2014, Vol. 39 Issue 3, p251 

    This article highlights recent trends and challenges in the area of multicompartmental nanoparticles and focuses on the use of electrohydrodynamic co-jetting for preparing multicompartmental particles, fibers, and cylinders. There are many excellent reviews that have focused on various methods...

  • Application of the anisotropy field distribution method to arrays of magnetic nanowires. De La Torre Medina, J.; Darques, M.; Piraux, L.; Encinas, A. // Journal of Applied Physics;Jan2009, Vol. 105 Issue 2, pN.PAG 

    The applicability of the anisotropy field distribution method and the conditions required for an accurate determination of the effective anisotropy field in arrays of magnetic nanowires have been evaluated. In arrays of magnetic nanowires that behave as ideal uniaxial systems having only...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics